Academic literature on the topic 'Atmospheric hazard'

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Journal articles on the topic "Atmospheric hazard"

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Stenner, Christian, Andreas Pflitsch, Lee Florea, Kathleen Graham, and Eduardo Cartaya. "Development and persistence of hazardous atmospheres in a glaciovolcanic cave system—Mount Rainier, Washington, USA." Journal of Cave and Karst Studies 84, no. 2 (June 30, 2022): 66–82. http://dx.doi.org/10.4311/2021ex0102.

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Glaciovolcanic cave systems, including fumarolic ice caves, can present variable atmospheric hazards. The twin summit craters of Mount Rainier, Washington, USA, host the largest fumarolic ice cave system in the world. The proximity of fumarole emissions in these caves to thousands of mountaineers each year can be hazardous. Herein we present the first assessment and mapping of the atmospheric hazards in the Mount Rainier caves along with a discussion on the microclimates involved in hazard formation and persistence. Our results are compared to applicable life-safety standards for gas exposure in ambient air. We also describe unique usage of Self-Contained Breathing Apparatus (SCBA) at high altitude. In both craters, subglacial CO2 traps persist in multiple locations due to fumarole output, limited ventilation, and cave morphology. CO2 concentrations, calculated from O2 depletion, reached maximum values of 10.3 % and 24.8 % in the East and West Crater Caves, respectively. The subglacial CO2 lake in West Crater Cave was persistent, with atmospheric pressure as the main factor influencing CO2 concentrations. O2 displacement exacerbated by low O2 partial pressure at the high summit altitude revealed additional cave passages that can be of immediate danger to life and health (IDLH), with O2 partial pressures as low as 68.3 mmHg. Planning for volcanic research or rescue in or around similar cave systems can be assisted by considering the implications of atmospheric hazards. These findings highlight the formation mechanisms of hazardous atmospheres, exploration challenges, the need for mountaineering and public awareness, and the broader implications to volcanic hazard assessment and research in these environments.
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Cook, Garry D., and Michael J. Nicholls. "Estimation of Tropical Cyclone Wind Hazard for Darwin: Comparison with Two Other Locations and the Australian Wind-Loading Code." Journal of Applied Meteorology and Climatology 48, no. 11 (November 1, 2009): 2331–40. http://dx.doi.org/10.1175/2009jamc2013.1.

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Abstract The passage of three Australian Category 5 cyclones within 350 km of Darwin (Northern Territory), Australia, during the last decade indicates that that city should have a high wind hazard. In this paper, the wind hazard for Darwin was compared with that for Port Hedland (Western Australia) and Townsville (Queensland) using data from a coupled ocean–atmosphere simulation model and from historical and satellite-era records of tropical cyclones. According to the authoritative statement on wind hazard in Australia, Darwin’s wind hazard is the same as Townsville’s but both locations’ hazards are much less than that of Port Hedland. However, three different estimates in this study indicate that Darwin’s wind hazard at the long return periods relevant to engineering requirements is higher than for both Port Hedland and Townsville. The discrepancy with previous studies may result from the inadequate cyclone records in the low-latitude north of Australia, from accumulated errors from estimates of wind speeds from wind fields and wind–pressure relationships, and from inappropriate extrapolations of short-period records based on assumed probability distributions. It is concluded that the current wind-hazard zoning of northern Australia seriously underestimates the hazard near Darwin and that coupled ocean–atmosphere simulation models could contribute to its revision.
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Woodruff, India, James Kirby, Fengyan Shi, and Stephan Grilli. "ESTIMATING METEO-TSUNAMI OCCURRENCES FOR THE US EAST COAST." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 66. http://dx.doi.org/10.9753/icce.v36.currents.66.

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Meteorological tsunamis, also called meteo-tsunamis, are significant ocean surface waves generated by atmospheric forcing. The waves typically result from energy transfer from atmosphere to ocean through the Proudman resonance phenomena, where translation speed of the storm system in the atmosphere coincides with the free wave speed of long surface waves. These tsunami-like waves can be hazardous, either through direct inundation of shorelines or through generation of harbor oscillations and other disruptions to maritime activities. The wide continental shelf bathymetry of the United States (US) East Coast provides a long potential fetch length for the resonant generation process, making the region particularly susceptible to meteo-tsunamis. In this study, we carry out a probabilistic analysis of potential meteo-tsunami hazard on the US East Coast, extending the earlier work of Geist et al. (2014) to include a wider range of storm conditions and additional response types including coastally-trapped edge waves. The work, carried out under the auspices of the National Tsunami Hazard Mitigation Program (NTHMP), extends the previous efforts of Geist et al. to include a representation of inundation and maritime hazards in at-risk areas. The work is conducted using the fully nonlinear Boussinesq wave model FUNWAVE-TVD (Shi et al., 2012), extended to include atmospheric pressure and wind forcing.
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Phy, Sophea Rom, Ty Sok, Sophal Try, Ratboren Chan, Sovannara Uk, Chhordaneath Hen, and Chantha Oeurng. "Flood Hazard and Management in Cambodia: A Review of Activities, Knowledge Gaps, and Research Direction." Climate 10, no. 11 (October 27, 2022): 162. http://dx.doi.org/10.3390/cli10110162.

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Cambodia is located in one of the most severe flood-vulnerable zones in mainland Southeast Asia. Flooding is the country’s most recurrent and impactful hazard among other natural hazards. This hazard alone, observed in many river basins, has been inflicting huge damages on livelihoods, social infrastructure, and the country’s economy. This study aims to review the current status of flood hazards, impacts, driving factors, management capacity, and future research directions on floods in Cambodia. The findings of this study suggested that there is still a lack of flood-related studies on flood hazard mapping, risk and damage assessment, and future flood analysis in Cambodia. The existing related studies mainly focused on the Tonle Sap Basin and its tributaries, the Lower Mekong Basin, the whole Mekong River Basin, and some of the tributaries of the Mekong River in Cambodia. The fundamental driving factors of the current flooding in Cambodia are impacts of climate change, land-use change, water infrastructure development, and weather extremes. The applications of mathematical and statistical tests and indices, conceptual and physically-based modeling, artificial intelligence and machine learning, and remote sensing are recommended to focus on future research directions on flood in Cambodia in the areas of land-use change, existing and planned operation of water infrastructure, flood hazard and damage assessment, and flood forecasting. The outcomes from these studies and applications would improve the understanding of flood hazard characteristics, reinforce flood management, and achieve flood damage reduction.
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Zahroh, Nyayu Fatimah, Budi Darmawan Supatmanto, Sholehhudin Al Ayubi, Mahally Kudsy, Edvin Aldrian, Findy Renggono, Jon Arifian, Rino Bachtiar Yahya, and Satyo Nuryanto. "Data integration from intensive observation period in 2016 to detect extreme weather in the vicinity of Jakarta region." MATEC Web of Conferences 229 (2018): 02006. http://dx.doi.org/10.1051/matecconf/201822902006.

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Meteorological hazard has been frequently occurred in Indonesia due to torrential rains. It is important to examine the characteristics of the atmosphere during rainy seasons for hazard mitigation. National Laboratory of Weather Modification Technology has conducted a short Intensive Observation Program (IOP) from January 18th to February 16th, 2016 to collect meteorological data in the vicinity of Jakarta Region. During that period several instruments have been used, such as Radar, Microwave Profiling Radiometer, Automatic Weather Station, and Radiosonde. This paper examines the comparison of atmospheric parameters obtained from Radiosonde and Profiling Radiometer during extreme weather days. The results showed that there were significant differences of instability indices of Radiosonde and Profiling Radiometer data: 15 points for KI, 6 points for TT and 100 points for SWEAT. The atmospheric stability indices of the Profiling Radiometer tended to be lower than Radiosonde. A radar image showing a rainstorm as well as rain rate information validates atmospheric index stability data. Radar and atmospheric instability indices data integration can be used as one of the parameters to forecast extreme weather events and as an early warning system of hazard mitigation.
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Bertrand, Darrian, and Mark Shafer. "Defining Hazards." Bulletin of the American Meteorological Society 98, no. 4 (April 1, 2017): 659–63. http://dx.doi.org/10.1175/bams-d-15-00236.1.

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Abstract State hazard mitigation plans guide state and local agencies in actions they may take to reduce their vulnerability to extreme events. However, because they are written for a general audience, they must be written in a way for a layperson to understand. In many cases, the people writing these plans are not meteorologists or do not have access to meteorological expertise. Consequently, descriptions of hazards may be taken from websites, other documents, or perhaps authoritative sources. This leads to inconsistencies in the way hazards are portrayed in the plans, which increases the difficulty of translating proposed actions to local governments or to other states. This article delves into the issue of these variances and how it affects those who write state hazard mitigation plans. For this brief text, the hazards discussed in state plans that fall in the National Oceanic and Atmospheric Administration (NOAA) Regional Integrated Sciences and Assessments (RISA) Southern Climate Impacts Planning Program (SCIPP)’s region are covered with a comparison of definitions from the National Weather Service (NWS) and the American Meteorological Society (AMS). States within the SCIPP region include Oklahoma, Texas, Arkansas, Louisiana, Mississippi, and Tennessee. This study found that it is more common for states to use key words from NWS and AMS hazard definitions than to use exact definitions. The goal of this article is to prompt a discussion about the inconsistency of terminology used in state hazard mitigation plans and to spread awareness of this issue so that future plans can keep their unique elements while providing a better description and understanding of the included hazards.
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Sillmann, Jana, Simone Russo, Sebastian Sippel, and Kristina Alnes. "From Hazard to Risk." Bulletin of the American Meteorological Society 99, no. 8 (August 2018): 1689–93. http://dx.doi.org/10.1175/bams-d-17-0327.1.

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Rädler, Anja T., Pieter Groenemeijer, Eberhard Faust, and Robert Sausen. "Detecting Severe Weather Trends Using an Additive Regressive Convective Hazard Model (AR-CHaMo)." Journal of Applied Meteorology and Climatology 57, no. 3 (March 2018): 569–87. http://dx.doi.org/10.1175/jamc-d-17-0132.1.

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AbstractA statistical model for the occurrence of convective hazards was developed and applied to reanalysis data to detect multidecadal trends in hazard frequency. The modeling framework is based on an additive logistic regression for observed hazards that exploits predictors derived from numerical model data. The regression predicts the probability of a severe hazard, which is considered as a product of two components: the probability that a storm occurs and the probability of the severe hazard, given the presence of a storm [P(severe) = P(storm) × P(severe|storm)]. The model was developed using lightning data as an indication of thunderstorm occurrence and hazard reports across central Europe. Although it uses only two predictors per component, it is capable of reproducing the observed spatial distribution of lightning and yields realistic annual cycles of lightning, hail, and wind fairly accurately. The model was applied to ERA-Interim (1979–2016) across Europe to detect any changes in lightning, hail, and wind hazard occurrence. The frequency of conditions favoring lightning, wind, and large hail has increased across large parts of Europe, with the exception of the southwest. The resulting predicted occurrence of 6-hourly periods with lightning, wind, and large hail has increased by 16%, 29%, and 41%, respectively, across western and central Europe and by 23%, 56%, and 86% across Germany and the Alps during the period considered. It is shown that these changes are caused by increased instability in the reanalysis rather than by changes in midtropospheric moisture or wind shear.
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Petean, Ioan, Aurora Mocanu, Gertrud-Alexandra Păltinean, Raluca Ţărcan, Dana Florina Muntean, Liana Mureşan, George Arghir, and Maria Tomoaia-Cotişel. "Physico-chemical study concerning atmospheric particulate matter hazard." Studia Universitatis Babeș-Bolyai Chemia 62, no. 4 (December 22, 2017): 33–46. http://dx.doi.org/10.24193/subbchem.2017.4.03.

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Madonia, Paolo, Marianna Cangemi, Giulia Casamento, Cipriano Di Maggio, Rosario Di Pietro, Marco Interlandi, Gianfranco Barraco, Roberto D’Aleo, and Francesco Di Trapani. "Atmospheric CO2 Concentrations in Caves Protected as Nature Reserves and Related Gas Hazard." Atmosphere 13, no. 11 (October 26, 2022): 1760. http://dx.doi.org/10.3390/atmos13111760.

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Atmospheric CO2 concentrations can reach high levels inside natural caves, representing a hazardous condition for both humans frequenting the underground environment and its safeguard due to the corrosion of speleothems induced by the acidification of atmospheric moisture. These issues are particularly critical for the eco-sustainable management of caves protected as nature reserves and undergoing touristic exploitation. In this paper we present the results of the C6 project, which was activated in 1999 for the monitoring of air quality inside three caves protected as nature reserves in Sicily (Italy). Near-real-time and spot measurements of air temperature and CO2 concentration have been carried out since the year 2000, giving the opportunity of evaluating the gas hazard for visitors and its potential impact on the protected underground environments, as well as the influence of meteorological and hydrological conditions in driving carbon dioxide accumulations. The analysis of data acquired in the hypogeal atmosphere, and their comparison with analogous epigeal measures, indicates that carbon dioxide accumulation is controlled by a complex interaction among cave topography, meteorological dynamics, gaseous exchanges between groundwaters and the atmosphere, and human fruition. This last factor, under particular conditions, can surprisingly diminishing underground CO2 concentrations.
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Dissertations / Theses on the topic "Atmospheric hazard"

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Alves, da Silva Junior Josimar. "Multiphase flow and fault poromechanics : understanding earthquake triggering and seismic hazard." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129043.

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Thesis: Ph. D. in Geophysics, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2020
Cataloged from student-submitted PDF of thesis.
Includes bibliographical references (pages 245-268).
In this Thesis, we investigate natural and engineered processes related to the assessment of the seismic hazard from the impact of anthropogenic operations on the stability of pre-existing geological faults. We do so by developing simulation tools that coupled multiphase flow and geomechanics, and apply them at the field scale using geologically realistic representations of the subsurface. In a first contribution at the scale of individual fractures, we study the impact of confining stress on the capillary pressure behavior during drainage through rough fractures, where we find that capillary pressure variations are sensitive to the degree of confining stress and the degree of spatial correlation of the fracture aperture.
By solving the elastic contact problem and simulating slow two-phase displacements through the fracture gap, we uncover the universality class of avalanche size in fluid displacement, and find that it is consistent with a process controlled by self-organized criticality. In a second contribution at the scale of hundreds of kilometers, we address the importance of long-term, large-scale crustal deformation on the spatiotemporal distribution of Slow Slip Events (SSEs) in the Guerrero Gap, putting forward an alternative explanation for SSE nucleation, interval time and arrest. We show, by means of finite element simulations with rate-state friction, that fault geometry and crustal deformation control the nucleation and arrest of SSEs, via normal stress changes along the subducting slab that act as a mechanism for SSE stabilization. In a third contribution, we develop a two-way coupled multiphase flow and geomechanics model that rigorously accounts for the fluid-solid interaction.
We do so by coupling two well-established open-source simulators, the open-source finite element mechanical simulator PyLith and the finite volume open source flow simulator MATLAB Reservoir Simulation Toolbox (MRST). We employ the fixed-stress split of the fully-coupled problem, which renders the sequential iterative scheme unconditionally stable. We validate our implementation using analytical solutions for single-phase flow for a range of model parameters, and find excellent agreement in all cases. We then apply our simulator to synthetic cases to illustrate the impact of CO₂ injection on earthquake triggering on a pre-existing fault, demonstrating that poroelastic effects can have a strong fault-weakening effect even through impermeable geologic strata. In the two final contributions in this thesis, we apply the coupled multiphase flow and geomechanics simulator described above to assess seismic hazard from fluid injection at the reservoir scale.
In our first application, we revisit the classical experiment in earthquake control from water injection at the Rangely oil field, Colorado. The coupled flow-geomechanics simulations on a geologically constrained structural model of the Rangely field, along with reservoir-pressure and seismological data, provide an unique opportunity to understand the mechanisms responsible for the observed seismicity. In particular, our analysis allows us to separate the contributions to fault destabilization from direct pore pressure diffusion and poroelastic effects and to elucidate the fundamental role of fluid flow along the fault. In our second field-scale application, we investigate the impact of industrial-scale CO₂ storage on the stability of, and potential leakage along, pre-existing faults in the Gulf of Mexico (GoM).
We do so by performing 3D numerical simulations of coupled flow and geomechanics using high-fidelity geological models of the Miocene section of the GoM, both at the field scale (10s of km) and at the regional scale (100s of km). We pay particular attention to the frictional and hydraulic properties of unlithified sedimentary faults, and incorporate a detailed, physics-based, probabilistic representation of clay and sand smearing to populate the flow properties of normal faults. We then investigate different scenarios of injection-well location in relation with faults' geometry and architecture, representing geologic settings corresponding to "open" and "closed" reservoirs.
The results of our flow-geomechanics simulations suggest that CO₂ injection results in small fault destabilization, and vanishingly small probability of leakage along faults--supporting the notion that large-scale (100s of Mt) CO₂ injection in the GoM is feasible, but that well location is key for the success of individual Carbon Capture and Storage (CCS) projects.
by Josimar Alves da Silva Junior.
Ph. D. in Geophysics
Ph.D.inGeophysics Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences
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Fothergill, Catriona E. "The role of computational fluid dynamics in predicting atmospheric flow and dispersion in the petrochemical industry." Thesis, University of Surrey, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250858.

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Jabarivasal, Naghi. "Indoor atmospheric radon in Hamadan, Iran : atmospheric radon indoors and around Hamadan city in Iran." Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/5452.

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Radon gas may be a major air quality hazard issue inside the home. Radon (222Rn) comes from the natural breakdown of radioactive uranium (238U) via radium (226Ra) in soil, rocks, and water. Radon and its progeny contribute more than 50% of the total radiation dose to the human population due to inhalation; it can result in severe and fatal lung disease. This investigation has determined the radon concentrations in seventy-seven domestic houses in a mountainous area of Hamadan in Iran which were monitored using track-etch detectors of type CR-39 exposed for three month periods. The arithmetic mean radon concentration in Hamadan buildings was determined to be 80 Bqm-3 and also an average indoor annual effective dose equivalent for the Hamadan city population was calculated as 1.5 mSv. Maximum radon concentrations were noted during the winter and spring season. In addition to this, 28 water wells were monitored by utilizing a Sarad Doseman detector at hourly intervals over extended periods. Radon measurements were also carried out in the nearby Alisadr show cave, using Solid State Nuclear Track etch Detectors (SSNTDs) during the winter and the spring periods. In the cave, the average annual effective geometric and arithmetic mean dose for guides was 28.1 and 34.2 mSv respectively. The dose received by visitors was very low. Hamadan city is built on alluvial fan deposits which are the source of the local water supply. The data from the wells shows that the groundwater in these alluvial deposits influences the flux of radon. The atmospheric radon concentration measurement in wells above the water surface ranged from 1,000 Bqm-3 to 36,600 Bqm-3. There is evidence that radon-rich ground waters play a significant role in the transport of radon through the alluvial fan system. There is evidence that the radon concentrations in homes in Hamadan are greatly influenced by the porous nature of the underlying geology and the movement of groundwater within the alluvial fan.
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Grunewald, Uwe. "Measuring and modelling of volcanic pollutants from White Island and Ruapehu volcanoes assessment of related hazard in the North Island /." Thesis, University of Canterbury. Geological Sciences, 2007. http://hdl.handle.net/10092/1428.

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White Island and Ruapehu are currently the most active volcanoes in New Zealand. During non-eruptive periods, intense quiescent degassing through fumaroles can occur. The current project studies the quiescent degassing plumes, including aerosol sampling on White Island and dispersion modelling of SO₂ and PM₁₀ from White Island and Ruapehu volcanoes. Aerosol sampling from fumaroles at the crater floor on White Island volcano was carried out on 9 February and 6 April 2005. The exposed filters were analysed for various anions and cations and the particle mass concentration and molar concentration determined. Major elemental constituents were sodium and chlorine (Na⁺: 413 µg m⁻³, Cl⁻: 1520 µg m⁻³), which show best correlation at both sampling sessions. Other ions detected, with little correlation, are Ca²⁺, PO₄³⁻ and to a certain extent Mg²⁺. Other constituents found, which cannot correlate explicitly to other ions, are K⁺, NH₄⁺, NO₃⁻, and SO₄²⁻. SEM study of one exposed filter was performed and mainly NaCl particles could be distinguished due to their well-defined cubic shape. The Air Pollution Model (TAPM) was used for dispersion modelling of SO₂ (models 1-4) and PM₁₀ (models 5 and 6) from White Island and Ruapehu volcanoes. Annual modelling was performed using different parameters of emission rate, exit temperature and exit velocity. The resulting plume dispersions show relatively low concentrations at ground level ≤10 m), particularly for the models of PM₁₀ dispersion. TAPM calculated the highest SO₂ ground level concentrations with model 4, where the NES values of 350 and 570 µg m⁻³ were exceeded several times. The data was then used for detailed hazard assessment of urban population in the North Island. The meteorological data from annual modelling was used for model evaluation and compared with observation data from different weather stations by statistical calculations. Overall, TAPM performed well with most good and very good results. To evaluate SO₂ dispersion modelling, airborne plume measurements were carried out on 22 November 2006 by plume traverses at 3, 10 and 20 km. Although there is some variation, the calculated correlation coefficients indicate good model results for two plume traverses at 3 and 20 km and one plume traverse at 10 km. The meteorological data was also used for model evaluation, and the results indicate good model performance. TAPM is therefore suggested for future studies when more observation data are available to verify the calculated model data.
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Bredesen, Michael H. "The Simulation & Evaluation of Surge Hazard Using a Response Surface Method in the New York Bight." UNF Digital Commons, 2015. http://digitalcommons.unf.edu/etd/568.

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Atmospheric features, such as tropical cyclones, act as a driving mechanism for many of the major hazards affecting coastal areas around the world. Accurate and efficient quantification of tropical cyclone surge hazard is essential to the development of resilient coastal communities, particularly given continued sea level trend concerns. Recent major tropical cyclones that have impacted the northeastern portion of the United States have resulted in devastating flooding in New York City, the most densely populated city in the US. As a part of national effort to re-evaluate coastal inundation hazards, the Federal Emergency Management Agency used the Joint Probability Method to re-evaluate surge hazard probabilities for Flood Insurance Rate Maps in the New York – New Jersey coastal areas, also termed the New York Bight. As originally developed, this method required many combinations of storm parameters to statistically characterize the local climatology for numerical model simulation. Even though high-performance computing efficiency has vastly improved in recent years, researchers have utilized different “Optimal Sampling” techniques to reduce the number of storm simulations needed in the traditional Joint Probability Method. This manuscript presents results from the simulation of over 350 synthetic tropical cyclones designed to produce significant surge in the New York Bight using the hydrodynamic Advanced Circulation numerical model, bypassing the need for Optimal Sampling schemes. This data set allowed for a careful assessment of joint probability distributions utilized for this area and the impacts of current assumptions used in deriving new flood-risk maps for the New York City area.
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Stuart, Joseph Scott 1971. "Observational constraints on the number, albedos, size, and impact hazards of the near-Earth asteroids." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/49805.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2003.
Includes bibliographical references (p. 132-144).
This work provides a statistical description of the near-Earth asteroids (NEAs) in terms of number, orbital parameters, reflectance spectra, albedos, diameters, and terrestrial and lunar collision rates. I estimate the size and shape of the NEA population using survey data from the Lincoln Near-Earth Asteroid Research project including more than 1300 NEA detections. The NEA population is more highly inclined than previously estimated and the total number of NEAs with absolute magnitudes (H) brighter than 18 is 1227 +170/-90. The absolute magnitude and orbital parameter distributions for the NEAs are combined with reflectance spectra and albedo measurements. I obtain a debiased estimate of the fraction of NEAs in each of 10 taxonomic complexes, and a debiased average albedo for each. The number of NEAs larger than 1 km is 1090 +/- 180. Next, I determine the impact frequency, collision velocity distribution and collision energy distribution for impacts of NEAs into the Earth and Moon. Globally destructive collisions ([approx.] 1021 J) of asteroids 1 km or larger strike the Earth once every 0.60 +/- 0.1 Myr on average. Regionally destructive collisions with impact energy greater than 4x1018 J ([approx.] 200 m diameter) strike the Earth every 47,000 +/- 6,000 years. The rate of formation of craters expected from the NEAs is found to be in close agreement with the observed number of craters on the Earth and Moon.
(cont.) These results combine the largest set of NEA discovery statistics from a single survey, the largest set of physical data on NEAs, and corrections for observational bias. The result is a comprehensive estimate of the total NEA population in terms of orbital parameters, absolute magnitudes, albedos, and sizes. This improved description of the NEAs will help us to plan surveys to find and study the remaining undiscovered NEAs, to connect the NEAs to their origins in the main-belt, to connect the NEAs to meteorite samples, to compare the lunar and terrestrial cratering record to the current population of potential impactors, and to understand the magnitude of the NEA impact hazard to the Earth's biosphere.
by Joseph Scott Stuart.
Ph.D.
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Jordan, Alexandra M. "An overview of the volcano-tectonic hazards of Portland, Oregon, and an assessment of emergency preparedness." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/114368.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 106-119).
Portland, Oregon, lies within an active tectonic margin, which puts the city at risk to hazards from earthquakes and volcanic eruptions. The young Juan de Fuca microplate is subducting under North America, introducing not only arc magmatism into the overlying plate, but also interplate and intraplate seismicity related to the subduction zone. Large crustal earthquakes are also probable in Portland because of the oblique strike-slip Portland Hills Fault zone. These hazards create risk to Portland residents and infrastructure because of pre-existing vulnerabilities. Much of Portland's downtown area, including the government and business districts, is at risk of ground shaking infrastructure damage, liquefaction and landslides due to earthquakes. Additionally, the city is within 110 km of three active Cascadia stratovolcanoes, two of which pose hazards from tephra and lahars. Though the city is under the umbrella of four emergency response plans-city, county, state and federal-there are critical gaps in mitigation strategies, emergency exercises and community education and outreach. Portland cannot prevent earthquakes or volcanic eruptions, but the city can reduce its vulnerability to these hazards.
by Alexandra M. Jordan.
S.B.
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Phillips, Melissa Catherine Koeka. "The Current Status of Lightning Safety Knowledge and the Effects of Lightning Education Modes on College Students." Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1310758369.

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Anderson, Eric Ross. "Analysis of rainfall-triggered landslide hazards through the dynamic integration of remotely sensed, modeled and in situ environmental factors in El Salvador." Thesis, The University of Alabama in Huntsville, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1543417.

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Landslides pose a persistent threat to El Salvador's population, economy and environment. Government officials share responsibility in managing this hazard by alerting populations when and where landslides may occur as well as developing and enforcing proper land use and zoning practices. This thesis addresses gaps in current knowledge between identifying precisely when and where slope failures may initiate and outlining the extent of the potential debris inundation areas. Improvements on hazard maps are achieved by considering a series of environmental variables to determine causal factors through spatial and temporal analysis techniques in Geographic Information Systems and remote sensing. The output is a more dynamic tool that links high resolution geomorphic and hydrological factors to daily precipitation. Directly incorporable into existing decision support systems, this allows for better disaster management and is transferable to other developing countries.

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Hoffman, Rebecca Lynn. "To the Southwest Corner: Tornado Myths and Socio-Demographic Vulnerability." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1366627060.

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Books on the topic "Atmospheric hazard"

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Black, Bill D. Radon-hazard potential of the western Salt Lake Valley, Salt Lake County, Utah. [Salt Lake City]: Utah Geological Survey, 1996.

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El-Sabh, M. I., S. Venkatesh, C. Lomnitz, and T. S. Murty, eds. Earthquake and Atmospheric Hazards. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5034-7.

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Misagi, Leo. The radiation hazard in mining. [Washington]: U.S. Dept. of Labor, Mine Safety and Health Administration, National Mine Health and Safety Academy, 1996.

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Moffatt, H. K. (Henry Keith), 1935-, Shuckburgh Emily, and National University of Singapore. Institute for Mathematical Sciences, eds. Environmental hazards: The fluid dynamics and geophysics of extreme events. Singapore: World Scientific, 2011.

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Spring School on Fluid Dynamics and Geophysics of Environmental Hazards (2009 National University of Singapore). Environmental hazards: The fluid dynamics and geophysics of extreme events. Edited by Moffatt, H. K. (Henry Keith), 1935-, Shuckburgh Emily, and National University of Singapore. Institute for Mathematical Sciences. Singapore: World Scientific, 2011.

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Kakko, Rhea. Vapour cloud modelling in the risk assessment of major toxic hazards: Effect of relative humidity. Espoo, Finland: Valtion teknillinen tutkimuskeskus, 1990.

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Greenhouse warming and nuclear hazards: A series of essays and research papers. Singapore: World Scientific, 2006.

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Response efforts to the Gulf Coast oil spill: Hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Eleventh Congress, second session, May 18, 2010. Washington: U.S. G.P.O., 2011.

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Wilson, John W. Radiation safety in commercial air traffic. Hampton, VA: NASA, Langley Research Center, 1988.

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Assembly, COSPAR Scientific. Remote sensing: Inversion problems and natural hazards : proceedings of the A1.2 and A3.3 symposia of COSPAR Scientific Commission A which was held during the thirty-first COSPAR Scientific Assembly, Birmingham, U.K., 14-21 July 1996. Kidlington, Oxford, U.K: Published for the Committee on Space Research [by] Pergamon, 1998.

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Book chapters on the topic "Atmospheric hazard"

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Speidel, D. H., and P. H. Mattson. "Problems for Probabilistic Seismic Hazard Analysis." In Earthquake and Atmospheric Hazards, 165–79. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5034-7_5.

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Meiers, Simon, and Mark Jarman. "VRJTankheat: A thermal model of deluge cooling water rates for atmospheric storage tanks." In Probabilistic Risk and Hazard Assessment, 85–94. London: Routledge, 2022. http://dx.doi.org/10.1201/9780203742037-9.

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Mentzafou, Angeliki, Vasiliki Markogianni, and Elias Dimitriou. "The Use of Geospatial Technologies in Flood Hazard Mapping and Assessment: Case Study from River Evros." In Geoinformatics and Atmospheric Science, 221–42. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66092-9_12.

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Taisne, Benoit, Anna Perttu, Dorianne Tailpied, Corentin Caudron, and Luca Simonini. "Atmospheric Controls on Ground- and Space-Based Remote Detection of Volcanic Ash Injection into the Atmosphere, and Link to Early Warning Systems for Aviation Hazard Mitigation." In Infrasound Monitoring for Atmospheric Studies, 1079–105. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75140-5_34.

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Ravanel, Ludovic, and Philip Deline. "Rockfall Hazard in the Mont Blanc Massif Increased by the Current Atmospheric Warming." In Engineering Geology for Society and Territory - Volume 1, 425–28. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09300-0_81.

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Wang, Rongxiao, Bin Chen, Sihang Qiu, Zhengqiu Zhu, and Xiaogang Qiu. "Hazard Source Estimation Based on the Integration of Atmospheric Dispersion Simulation and UAV Sensory System." In Communications in Computer and Information Science, 494–504. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6463-0_42.

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Fernando, Malith, Malinda Millangoda, and Sarath Premalal. "Analyze and Comparison of the Atmospheric Instability Using K-Index, Lifted Index Total Totals Index Convective Availability Potential Energy (CAPE) and Convective Inhibition (CIN) in Development of Thunderstorms in Sri Lanka During Second Inter-Monsoon." In Multi-Hazard Early Warning and Disaster Risks, 603–14. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73003-1_41.

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Lorenz, Ralph D. "Atmospheric Electricity Hazards." In Space Sciences Series of ISSI, 287–94. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-87664-1_18.

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Keller, Edward A., and Duane E. DeVecchio. "Atmospheric Processes and Severe Weather." In Natural Hazards, 344–95. Fifth edition. | New York: Routledge, 2019. | “Fourth edition published by Pearson Education, Inc. 2015”—T.p. verso. |: Routledge, 2019. http://dx.doi.org/10.4324/9781315164298-9.

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Golding, Brian, Jenny Sun, Michael Riemer, Nusrat Yussouf, Helen Titley, Joanne Robbins, Beth Ebert, et al. "Connecting Weather and Hazard: A Partnership of Physical Scientists in Connected Disciplines." In Towards the “Perfect” Weather Warning, 149–200. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98989-7_6.

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AbstractAchieving consistency in the prediction of the atmosphere and related environmental hazards requires careful design of forecasting systems. In this chapter, we identify the benefits of seamless approaches to hazard prediction and the challenges of achieving them in a multi-institution situation. We see that different modelling structures are adopted in different disciplines and that these often relate to the user requirements for those hazards. We then explore the abilities of weather prediction to meet the requirements of these different disciplines. We find that differences in requirement and language can be major challenges to seamless data processing and look at some ways in which these can be resolved. We conclude with examples of partnerships in flood forecasting in the UK and wildfire forecasting in Australia.
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Conference papers on the topic "Atmospheric hazard"

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Stewart, Eric. "A sensor-independent gust hazard metric." In AIAA Atmospheric Flight Mechanics Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-4135.

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Glagolev, Vladimir V., and Anna M. Zubareva. "Application of vegetation indices in fire hazard forecasting from satellite images." In 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, edited by Oleg A. Romanovskii and Gennadii G. Matvienko. SPIE, 2022. http://dx.doi.org/10.1117/12.2645062.

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Patera, Russell. "Hazard Analysis for Uncontrolled Space Vehicle Reentry." In AIAA Atmospheric Flight Mechanics Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-6500.

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West, Leanne, Gary Gimmestad, Ralph Herkert, William Smith, Stanislav Kireev, Taumi Daniels, Larry Cornman, et al. "Hazard Detection Analysis for a Forward-Looking Interferometer." In 1st AIAA Atmospheric and Space Environments Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-3635.

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Schwarz, Carsten, and Klaus-Uwe Hahn. "Simplified Hazard Areas for Wake Vortex Encounter Avoidance." In AIAA Atmospheric Flight Mechanics Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-5903.

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ROBINS, ROBERT, and DONALD DELISI. "The potential hazard of aircraft wake vortices in ground effect and crosswind." In 16th Atmospheric Flight Mechanics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-3400.

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Clark, Ivan. "Lidar and Electro-Optics for Atmospheric Hazard Sensing and Mitigation." In 4th AIAA Atmospheric and Space Environments Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2012. http://dx.doi.org/10.2514/6.2012-2788.

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ROSSOW, V. "On the wake hazard alleviation associated with roll oscillations of wake-generating aircraft." In 12th Atmospheric Flight Mechanics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-1774.

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Schwarz, Carsten W., Dietrich Fischenberg, and Frank N. Holzäpfel. "Wake Turbulence Evolution and Hazard Analysis for a General Aviation Takeoff Accident." In 2018 Atmospheric and Space Environments Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-3019.

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Nelson, Robert. "The Trailing Vortex Wake Hazard: Beyond the Takeoff and Landing Corridors." In AIAA Atmospheric Flight Mechanics Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-5171.

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Reports on the topic "Atmospheric hazard"

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Nadal-Caraballo, Norberto, Madison Yawn, Luke Aucoin, Meredith Carr, Jeffrey Melby, Efrain Ramos-Santiago, Fabian Garcia-Moreno, et al. Coastal Hazards System–Puerto Rico and US Virgin Islands (CHS-PR). Engineer Research and Development Center (U.S.), December 2022. http://dx.doi.org/10.21079/11681/46200.

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The South Atlantic Coastal Study (SACS) was completed by the US Army Corps of Engineers to quantify storm surge and wave hazards allowing for the expansion of the Coastal Hazards System (CHS) to the South Atlantic Division (SAD) domain. The goal of the CHS-SACS was to quantify coastal storm hazards for present conditions and future sea level rise (SLR) scenarios to aid in reducing flooding risk and increasing resiliency in coastal environments. CHS-SACS was completed for three regions within the SAD domain, and this report focuses on the Coastal Hazards System–Puerto Rico and US Virgin Islands (CHS-PR). This study applied the CHS Probabilistic Coastal Hazard Analysis (PCHA) framework for quantifying tropical cyclone (TC) responses, leveraging new atmospheric and hydrodynamic numerical model simulations of synthetic TCs developed explicitly for the CHS-PR region. This report focuses on documenting the PCHA conducted for CHS-PR, including the characterization of storm climate, storm sampling, storm recurrence rate estimation, marginal distributions, correlation and dependence structure of TC atmospheric-forcing parameters, development of augmented storm suites, and assignment of discrete storm weights to the synthetic TCs. As part of CHS-PR, coastal hazards were estimated for annual exceedance frequencies over the range of 10 yr⁻¹ to 10⁻⁴ yr⁻¹.
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Nadal-Caraballo, Norberto C., Madison C. Yawn, Luke A. Aucoin, Meredith L. Carr, Jeffrey A. Melby, Efrain Ramos-Santiago, Victor M. Gonzalez, et al. Coastal Hazards System–Louisiana (CHS-LA). US Army Engineer Research and Development Center, August 2022. http://dx.doi.org/10.21079/11681/45286.

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The US Army Engineer Research and Development Center (ERDC), Coastal and Hydraulics Laboratory (CHL) expanded the Coastal Hazards System (CHS) to quantify storm surge and wave hazards for coastal Louisiana. The CHS Louisiana (CHS-LA) coastal study was sponsored by the Louisiana Coastal Protection and Restoration Authority (CPRA) and the New Orleans District (MVN), US Army Corps of Engineers (USACE) to support Louisiana’s critical coastal infrastructure and to ensure the effectiveness of coastal storm risk management projects. The CHS-LA applied the CHS Probabilistic Coastal Hazard Analysis (PCHA) framework to quantify tropical cyclone (TC) responses, leveraging new atmospheric and hydrodynamic numerical model simulations of synthetic TCs developed explicitly for the Louisiana region. This report focuses on documenting the PCHA conducted for the CHS-LA, including details related to the characterization of storm climate, storm sampling, storm recurrence rate estimation, marginal distributions, correlation and dependence structure of TC atmospheric-forcing parameters, development of augmented storm suites, and assignment of discrete storm weights to the synthetic TCs. As part of CHS-LA, coastal hazards were estimated within the study area for annual exceedance frequencies (AEFs) over the range of 10 yr-1 to 1×10-4 yr-1.
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Liu, Jing, Yuanmei Chen, Die Liu, Fang Ye, Qi Sun, Qiang Huang, Jing Dong Dong, Tao Pei, Yuan He, and Qi Zhang. Prenatal exposure to particulate matter and term low birth weight:systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, August 2022. http://dx.doi.org/10.37766/inplasy2022.8.0064.

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Review question / Objective: To assess the effects of particulate matter exposure during various periods of pregnancy on low birth weight and term low birth weight. Population:pregnant women and their singleton live-births; Exposure: maternal exposure to ambient PM2.5 and PM10 during the entire pregnancy or each trimesters were estimated based on ground-level atmospheric pollution monitoring stations or validated exposure models (μg/m3 ); Comparator(s): risk estimates were presented as hazard ratios (HRs) or odds ratios (ORs) and their 95% confidence intervals (95% CI) with per specific increment in PM2.5; Outcomes: term LBW(≥37weeks and<2500g) or LBW(<2500g)were defined as a dichotomous variables.
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Melander, B. G., and W. W. Cooley. Atmospheric Electricity Hazards Threat Environment Definition. Fort Belvoir, VA: Defense Technical Information Center, August 1985. http://dx.doi.org/10.21236/ada159739.

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Request for assistance in preventing hazards in the use of water spray (fog) streams to prevent or control ignition of flammable atmospheres. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, July 1985. http://dx.doi.org/10.26616/nioshpub85112.

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